In the past, before the era of social networks, RSS was a convenient tool. It allowed you to subscribe to a website's real-time updates, similar to a mailbox concept, that let you subscribe to many websites' latest news. This service usually required you to go to a specific website to read the subscribed website's articles. At the same time, the subscription method also had a newsletter service. Now, "FeedBurner" combines the two by subscribing to articles through email and it's a free service. After registering, just enter the website address you want to subscribe to and then select the email frequency, you can easily access the information you want.